Cream-separator.



H. FISHER. CREAM SEPARTOBt APPLICATION FAILED Ammo, 1907.

LOQQ, Panama Nav. 14, 1911.

Homan o.v FISHER, ,0F naval-INA, onto.

. cnnamsnraaajmon.

VSpecification of ettersl'latent. Patented Nova '14, 1911.

lapplication mea April 2o, 1907. seriai'nassasza To all whom it mayconcern:

Be itI known that I, HoMEn O. FISHER, residing at Ravenna, in the countyof Portage and State of Ohio, have invented a certain new and usefulImprovement in Cream- Separators, of which the following is a full,

clear, rand exact description, reference being had to the accompanyingdrawings. A.

My invention relates to centrifugal cream separators.

- .In a usual or common' construction of cream separators, the `rotaryreceptacle or bowl is provided with a hollow spindle-the upper end ofwhich is connected by-a pipe tofore em loyed.

or tube to a tank'containing the milk to be separated, which tank islocated above the separator so that a' s uiiicient head or pres- "sureis obtained to force the milk through the bowl. From the hollow spindlethe milk spreads over the 'surfaces of so-called disks surrounding thespindle, and bythe rapid rotation' of the bowl the cream is separated,the skim milk collecting at the outer portion or periphery of the bowland the The skim milk and through' separate the top thereof.

One lof the objects of my invention'is to provide means whereby .thelabor involved .in handling and lifting the milk before it is passedthrough a separator is materially lessened.

A further object is to improve the-eiciency of cream separators so thatlarger quantities of milk can be handled in a 'ven space of time thanwith the separators erepas'sageways provided at i Further objects willappear from the dea r-led description in the specilication.y

carrying out the first object of my in- 'zvention supply the milkthrough the bottom ofthe bowl, the parts being so arranged andconstructed that the milk is forced or drawn through the bowl byso.called suction or by the partial vacuum created by` the rotation ofthe bowl and parts therein. In other words the separator acts as acentrifugal pump .to force the milk vthrough the owl. Thus it isunnecessaryl to lift the milk to a tank above the vseparator but thetank can be on the same level with the separator or even below it. f tIl further provideimprovements in the construction andk arrangements ofthe variusA parts on the interior' of the bowl so that the milk may bemore uniformly: distributed to the rotating liner provided therein andthe cream more thoroughly sepa-l rated, and also in order thatv thecream and skim milk may bedrawn from the bowl with less liability ofslogging theV parts.

My. invention may be further characterized as consisting in certainnovel details of construction and combinationsand arrendements of partswhich will be more fully escribed in the specification and set forth inthe appended claims.

Reference is now had to the accompanying drawin showing a creamseparator equipped with the various features of my invention, in which-I Figure 1 is a 'vertical section of the same, and Fig. 2 is atransverse section approximately 'along the line :v-w of Fig. 1.

The rotary portions of thecream sepa'- rator are supported on a suitablelframe 10 having a central opening 11, the upper ortion of the wall ofwhich is rounde or .curved forming a ball race, which openingcommunicates with aj chamber 12, which may be cylindrical in form,having in the side wall an opening 13 the purpose of which will beexplained.'v

At 14 -is shown a rotary receptacle or socalled bowl supported on ballbearing 15 in the ball race. The bowl comprises a` disklike base 16having a threaded periphery and a removable top or body consisting of acylindrical portion 17, and an upper cone shaped top portion 18 'havinga cylindrical open neck 19. The bottom of the cylindrical portion 17 ofthe -bowl is providedv with an internally threaded flan e 20 whichscrews on to the threaded perip ery ofthe base 16,

to form a tight joint'. The base 16 is provided with a downwardlyextending tubular portion which consists in this case of a short 'pipe22 screwed into' a centrally located opening 23. The base is alsoprovided on its inner side with a flange-likel boss 24 prolsuitablepacking 21 being provided, so as vided with a centrally located threadedopening 25 slightly smaller than the opening 23. The opening 25communicates with a chamber26 for a valve -27 consisting of a disk orplate 28 which normally rests upon the 'upper end ofthe tube 22 when thebowl vis stationary'so'as to.close thefopenng insaid tube, `and aplurality ofinwardly` extending fingers 29mm@ "ngagefiheiinner surfaceof the tube f;

Extending down into the vbowl ,through the opening in the neck portion19 is a hollow vertical spindle or tube 30 .which is threaded at itslower end and is screwed into the threaded opening Q5 in the boss Thespindleis provided at its lower end with a number of fingers orprojections 3l, which acts as a stop to limit the upward movement of thevalve 2T, `as will be explained more lgrtully, The tube is smaller indiameter than the upper opening inthe neck 19 of the bowl and iscentered therein by a ring or collar 32 which may be secured to the tubein any desired. manner andiits snugly within said opening. This ring orcollar 32 isA provided with lone or more openings 33 through which thecream passes as will be explained. The spindle 30 is provided on theinterior otz the bowl with a plurality of vertical rows or series otlateral hollow tubular projections consi'sting, inthis ease of shorttubes 35 secured in 'openings' in the wall [of the spindle. In thisinstance I have shown tour vertical rows or series of'tubularprojections but it is `to be understood of course that the number ofrows or series may be greater or less than that shown as will be foundnecessary, and the number of tubes in each ro'w may be'varied asdesired. Located in otlie spindle a'short distance above the uppermosttubular projections is a plug or partition 36 which limits the upwardmovement of the milk throughV the spindle. A short distance' above thepartition 36 are a 35 number of vent holes or openings 37`for the escapeof air from the receptacle.r Surrounding the spindle isa casing 38 having in this instance a cone shaped base'39. 'which lrests upon a ledgeor shoulder 40a at 40l the bottom of the bowl and having a centrallylocated opening which fits over the boss 24, and an elongated bodyportion har- *ing afpluralitv of projecting ridges 40, the. numberofwhich is equal to the number ot '45 ytfertical rows of tubularprojectionsand into which "the tubular projections extend. 'Eachfof theridges 40 is provided in line with they openings in the tubularprojections 35 with an elongated vertical slot'41.

,'50 Surrounding the casing 38 is a liner i42 which is 'formed in thisinstance `from a contlnuous metal strip spirallvv" arranged, the

Vturns or lavers being spaced apart, by mem? j bers43 which in this caseare depressions` 55' formed in the surface of the metall- The,

turns of the spirally arranged'strip or disks are notched as shown at 44to receive the ridgesv ofthe casing. The cream which vcollects laroundthe spindle'passes upward 60 between the-inner edges ofthe liner orturns of the spirally arrangedstrip' and the portionsl of the verticalwall of the'casings lof cated'between the slotted endsof't-he prosjecting ridges through vvwhich `the milk from 85 the spindle passes. Asthe ridges extend' a `considerableI distance outward beyond the inneredges of the liner, the streams of milk passing through the slots ofsaid ridges can not interfere with the upward flow of cream.

Adjacent the inner wall of the bowl are a plurality of vertical tubes 45for conveving from the bowl the skim milk which collects \at the outerportions of the interior thereof. c These tubes which majv be secured tothe inner wall ot the bowl by solder or anv other suitable means, areprovided with a plurality of pertorations or openings 46 throughouttheir .length for the admission of the skim milk, and are connected at`their "upper ends with means t'or conveying milk upward and toward thespindle, which Imeans consists in this case of passageways `47 cored inthe conical portion .1S ofthe at their upperI ends from which the skimmilk majv pass intoa suitable receptacle.

Lccatedin the chamber 1Q below the bowl is a socket member 49 providedwith an the tube Q2, and with a threaded opening 51 which receives theend of a milk supply pipe The socket member 4f) is pressed upwardljvagainst the lower end of the'tube,

located between the lower wall of the chamber and the bottom of thesocket member. T he socket member is providedvwith a, shoulder 54against which the lower end of the tube bears. a washer of felt or othersott material being interposed between the lower end of the tube and theshoulder. The milksupply pipe is adapted tovbe connected to a suitabletankl and maybe provided-witha valve for regulating the How of milk tothe receptacle.

mien the bowl is rotated, preferabh7 b v a driving member which may beattached to the upper end .of the hollow spindle 30. the rotating partsreducethe air `pressure in the. bowl` causing a partial vacuum therein.so that the milk flows from the supply tank into the spindle 3() liftingthe valve Q7 'until'it engages the fingers 31 on the lower end ot thespindle.,the milk passing through the tubular extensions in the spindle,onto-'the surfaces of the liner, The cream collects near the center andpasses upward along the wall of the casing 38 into the passagewaybetween the spindle 30 and the neckportion 19, and through the opening33 in the ringl or collar 32 into asuitable receptacle. The skimmilkcollects nearthe 'outeredges of' and is carried upward through thepassageways 47 and out through the openings 48 into a suitablereceptacle. vent- ,holes in the spindle for the escape of airthat mightbe carried into the spindle :with ,the niilkblubbering. ispreventedandfthe eiliciency vofthe separator is imbowl, which passagewavs haveopenings 48' opening which receives the lower end of,

to-prevent the leakage of milk, by a spring' the liner,l passes into thevertical tubes 45 ,By providing Loodsen therein, .it will be unnecessaryto place the supply tankl at a considerable height above the bowl,consequently less handling and lifting of the milk will be necessary.vSince the skim milk passes in thev tubes there is less danger of t-herotating parts particularly the passageways between' ythe layers efl theliner being clogged by curd or fatty substances, as is the case .whenthe skim milk in passi-ng out of the receptacle .flows along the outeredges of the liner. If it is desired toclfan or inspect the partstheupper part of the bowl or receptacle can be unscrewe'd and removedleaving the liner and other y parts exposed to view. 4'llhe liner canthen be easily cleaned. l

I do not desire to -be confined to the exact details shown but aim inm-yclaims .to cover all modifications which do not involve adeparture fromthe spirit and scope of. my invention. f

Havin'gjdescribed my invention, I claim, l. In va cream separator', 1ncombination,l a rotary .bowl having atubular projection at the bottomther-eef, a milk supply connected to said tubular projection, and avalve adapted to be opened by the flow of milk intoI 4the bowl and toautomatically close' to pre vent the backward flow ofmilk lfrom saidbowl when vthe rotationv 'of the latter is stopped.'

2. In a cream separator, in combination, a rotary bowll having a ho'llowtubular projection at the bottom thereof and adapted to rotatetherewith, and a normally station- 'ary socket member having a milksupply `pipe connected thereto and receiving the lower end ofl saidtubular projection,a.nd

means for yieldingly pressing said socjket member upward into engagementwith the latter. j .A v

3. In a cream separator, in combination, a.

4rotary bowl, a hollowV feed tube extending` therein, a plurality of vlaterall extend tubular projections carried by said feed tube, aseparator casing surrounding thefeed tube. and having vverticallydisposed radiallyl extending hollow projections eachv provided. with anoutlet opening at its outer edge, said hollow-projections beingadapted'to receive.

the milk from the lateral tubular lprojections and a liner surroundingsaid casing.-

y lL-In va cream, separator, in combination, a rotary bowl, a hollowfeed tube extending therein,4 said tube havingqseries of lateral tubularprojections, a casing surrounding' said feed tube and having slotsopposite the tubular projections, anda separate liner surroundingsaidcasing.

- 5. In a cream separator, in combinatioma rotary bowl, a hollow feedtube extending therein, lmeans for supplying' milk to the bottom of saidfeed tube, a pluralityof rows of hollow tubes extending laterally fromsaid feed tube, a casing surrounding said `feed tube, said casing havingvertical slotted extensions receiving said laterally extending. tubes,and a removable liner surrounding said casing.

6.- In a cream separator, in combination, a rotary bowl having a feedtube adapted to -be connected to a source of milk supply, a

liner `in said. bowl and adapted to rotate therewith, said bowl having apassageway for conveying the' cream therefrom, and a plurality ofperforated tubesbetween the wall of t-he bowl and .the outer peripheryvof said bowl.. l

In testimony whereof, Iafiix my signature int-he presence of twowitnesses. Y

HOMER O. FISHER.

the liner for 'conveying the skim milk from Witnesses: y

ARTHUR F. Kwis,

RAE Weiss.

